| 标题 | girishsaraf Online-Appointment-Booking-System f427b4757128ca253d33d0cc4e87bbb9c999a4d5 SQL Injection |
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| 描述 | The affected component is the root `signup.php` registration handler. The `fname` field is concatenated directly into an INSERT statement:
```php
$name=$_POST['fname'];
$sql = "INSERT INTO Patient (Name, Gender, DOB,Contact,Email,Username,Password) VALUES ('$name','$gender','$dob','$contact','$email','$username','$password') ";
...
echo "Error: " . $sql . "<br>" . mysqli_error($conn);
```
An unauthenticated attacker can close the quoted value and inject additional columns, causing error-based disclosure of the full query and `mysqli_error()`. By injecting a subquery into another column position (e.g. `fname=x',(SELECT password FROM patient LIMIT 1),'...')-- -`), the attacker can insert extracted data into the new row and read it back, exfiltrating arbitrary database contents.
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| 来源 | ⚠️ https://github.com/girishsaraf/Online-Appointment-Booking-System/issues/9 |
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| 用户 | jiqinwang (UID 101291) |
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| 提交 | 2026-09-16 15時48分 (19 日前) |
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| 管理 | 2026-10-05 16時58分 (19 days later) |
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| 状态 | 已接受 |
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| VulDB条目 | 413617 [girishsaraf Online-Appointment-Booking-System 直到 f427b4757128ca253d33d0cc4e87bbb9c999a4d5 Registration signup.php fname SQL注入] |
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| 积分 | 20 |
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